TWO children and a woman have been airlifted to Sydney hospitals after a truck and car crash this afternoon near Temora.

The 55-year-old woman was treated for a suspected internal and pelvic injuries before being airlifted to Royal North Shore Hospital in a serious condition.

NSW Ambulance duty operations manager Stephen Pollard said the female patient was "ejected quite a distance from the vehicle".

Meanwhile, the 12-year-old girl and 9-year-old boy were treated for suspected abdomen and back injuries and airlifted to Westmead Children's Hospital, both in a stable condition.

In other news

"Paramedics and other emergency services did an excellent job to safely extricate the young patients from the vehicle. They are the best in the business at what they do," Inspector Pollard said.

He said these types of incidents present a number of challenges for paramedics.

"They need to be able to get to the patient quickly, but have to ensure they are not putting themselves in danger," he said.

Inspector Pollard urged drivers to be extra vigilant when behind the wheel of any motor vehicle, so that they can get home safely to their families.

EARLIER:

A woman and two children have been injured after a truck and car crashed near Ariah Park today.

Three people from one vehicle - a woman, a girl and a boy - were injured in the crash, Ambulance NSW spokesperson said.

Five crews of paramedics responded to the scene near the intersection of Burley Griffin Way and Mary Gilmore Way after receiving calls around 1.30pm.

Once there they treated a 55-year-old woman for suspected pelvic injuries and a 12-year-old girl and nine-year-old boy have sustained suspected abdominal and back injuries.

Fire and Rescue NSW (FRNSW) crews from Temora also responded to the crash, where they found a car had overturned after colliding with a truck.

"Firefighters worked with the NSW State Emergency Service to extricate two children who had become trapped in the car as a result of the incident," FRNSW said in a statement.

"Both children were transported to hospital for further treatment."

The woman, who had been behind the wheel of the car, and the truck driver were also taken to hospital, FRNSW said.

Flight radar showed just after 3.10pm indicated a rescue helicopter was approaching Temora airport.

Mary Gilmore Way is closed in both directions between the Burley Griffin Way and Barnes Street in Ariah Park.

Traffic is being diverted through Barnes Street and Davidson Street to rejoin the Burley Griffin Way.

Only one lane of the Burley Griffin Way is open at Ariah Park, with stop-slow traffic control in place.

Emergency services remain at the scene on the Burley Griffin Way, with heavy vehicle inspectors also joining local council and Transport for NSW staff.

More to come